Hem-folder for sewing machines



Sept. 22, 1931. R. J. SAILER 1,823,954

HEM FOLDER FOR SEWING MACHINES Filed March 3, 1930 2 Sheets-Sheet 1 Sept. 22, 1931. R. J. sAlLE-:R 1,823,954

HEM FOLDER FOR SEWING MACHINES Filed March s. 4195o 2 sheets-sneu 2 W'Mveneo. Qwwmtov l ,60. Rudd/'M Jyailer f eo.

Patented Sept. 22, 1931 Ennomn .J.lsAILEE,VoE :Boemerangl NEW JERSEY, AssIGNoR To THE' SINGER illrlfi-Y EAGTUEING .COMEANE JERSEYV f v Application iled Merch 3, L

thin yor flimsy insiterielsyis fcapable fof turn-V ing 'in tlie 'lf-ree for raw edgeof the material 'te en 'extent 'substentiellyifeq-uzilte the full Width-oit the gherir-told. n f preferred embodiment fof the invention Ecomprises a scroll having'the usuel isp-eced oldaee directing wells merging into vguiding Wa-l'ls ier the louter fand inner fold-edges Vvof e hem-fold 'Combined With'this soro'll is e 'feldiface 'separating farb'o'r' which prefTr erzibly termina/*tes Short :of the delivery end of the scroll, whereby the folded hem :is 'de livered by 'the 'scro'll with" the fold-feces "lucent-edt 'With enel] #ci-ther.; f 29 The iEold-feee :separating farben-mound Y which the liem is yier-med., preferably y"p'ifojects forwardly fbeiyond vtlie Work-'receiving "end of fthe s'crolla'nd is suspended With-in J"the scrolfl by an far-1n which l.sp'irzvlly yencompasses the arbor. This arbor:supperting farm is bonnes-ted with YIthe arbor et the outer fold-edge side and adjacent the Work-receiving-end "of the scroll, 'the juncture of the 1er-m eln'd 4arbor providing a .guidingvvalll'for -direeting the inturnefil :edge ofthe heminto Contact with 'the outer 'edgefo'ld thereof.4 Plfeefrafbly, the :arbor is slightly .tapered r narrowed' toward its delivery end to insure -lilrat `sufficient materiell is provided 'to permit K the 'raw edge thereof -fto lie 'in 'close 'Contact with the youter edge-fold ref 'the .fh-em.v

' In 'the :accompanying drawings, Fig. i is e top-plan view of the present 'improved "herinner jas applied to efsevving 'machine "of which isl'onlly shown a. portioiiwof theclotl plate and the presser-foot :to illustrate 'the' .position .of @the hemmen Figs.Y 2 :and 3 ereopposite side' 'elevations lo the Vherinner.` i Fig. I4. is a longitudinal 4section of the lien nier substantially on theline iof Fig. i 1. I F is a transversefs'ection "of the hem- I mer substantially 'en the line :5e-"5 of. Fig. L 6i-s a trens'lverse'section of the v.heme mer substantially on the line f6"-'6.of.v .`ig.

Fig.1 f? is. a. .front Vend `elevation 'of the 0E ELIZABETH;

5 provided with a 's161316 through Willich pass; the` securing; i screws 17, 'whereby fthe hein- NEW. JERSEY, .el coRPonAmIoN 0E aEivf-EoLDEE EOE SEWINGMECINEQ i930. serial No. '432;599-

`-f heminer, Iwith the werksnpporting arbor 'in VtiafnsveIjse Section. Fig. V8 is 'a.;sectional view of the stitehel hein-'fold produced. j Referring ite theidrawings, 'the hein-'folder'is showin `as 'applie'dto e sewing maehinegi having e. cloth-plate 1, 'e tliroat-pl'a'te 2 'and-e presser-foot 8 provided Withefneedleeeperture4- I A L hem-"folder Vhas a 'supporting shrink "folder may .be a .lj1'1st'e'd fupon 'the cloth-plete .inY ie direetion erosswise of the iline .of :seemformetion indicated bythe 'arrow Ain Fig. l.

'Rising from the .inner end-ef @the .shank 5f' iste yfieri-ge 'S carrying e hemeifolding scroll, eer'uprising l .Se workeupperting lepron f9 which enrvesrnpvveirdly .et AAone 'side thereof 'to provide 'e 'gfiiding "five-1.1` 'i0 'for rthe 4outer Iedge-'fold*of 'the hem; The well l0*v merges inte fefsubstgiritiellyat fold-ieee fdiffm y, reciting well. 1.1 which overhange fthe apron 9 and er" innery end curves downwardly to ffoirni ze .guiding dwell 'for 'the inner edge-fold of the hein. The guidingwelll .12 terminates in afs'ubstjaintirellyflet 'lip 13 which nnderlies Vthe "wall il and -servesfto seperate :the yinturnerl` margin 'of 'the hemy lfold .iom 'the bodyemnteriallup'on tiiejapron 19. Ift will @therefore be observed 'thet'the described ysc-rol'l'comprise/s the usuel reversely bent plate, with 'the free end of the inner lip 13 'spaced from the upturned Wall A10 .a -suicient Idistance to provide clearance for the Work; Inj'the present instance, Vthe Work-receiving end of the router foldsace direction wail .'11 is partly 'cut 'away at an inclination to the Width of the scroll, Wherefby the Work-receiving 4end of the `scroll :has

'the form/of Ye Aspifrai edge 14, vwhich facilitetesk the initial folding ofthe Work. l

1n order to efficiently: fold flimsy imatel-ifials and particularly in theformaltion `of Wide hemfol'ds,-the folder. includes a. foldfa'ce separatingeu'lior` :15 which, in ytlre plies-` entinstance,'comprises aflattened .tube of sheet-metal fhav-ngjclosed ends. 1nk thefdi-l .'rection toward its delivery end, the arbor 1li kis disposed. at ia slight inclination to the guiding 'Wall .1Q-said erben'.k 1-5 being inftlie 10o e terminates short of or is disposed at apoint substantially in advance ofthe deliveryend ofthe scroll. f f

The arbor l is supported.Y by an arm' 18 which spirally encompasses and is .connected with the arbor solely'atv thelongitudinal edge 17 thereof, Vat a point which is substantially in alinement with ythe outer'edge-f'old' -wall andL adjacent `to the work-receiving end' of the scroll'. The arm 18 rises from a base 19Kupon the folder-shank 5 andlat lits juncture with the arbor defines a guiding wall-20 which directs the inturned or rawedge ofthe hem-fold into contact with the outer edge-fold thereof. The described arbor-supporting means thereby provides fon-readily folding the workcompletely about the arbor, whereby the fold-faces of thehem-fold arev separated-from each other during the fold-.formingloperation and are thereafter compressed into contact with each other" by the converging walls 11 and V13 4beyond the delivery-end of the arbor 15.

. .By referring to Fig.V 8 of. the drawings,

is willVV be observed that .the hem-fold formed in a `body-material AA by vthe present;V folder has anouter fold-edge B, an outer fold-face .-C, an inner` fold-edge D andan inturned -face'lilhaving its'free edge disposed-in contact with the outer fold-edgeV B. It will be A'further observed that the yhem-fold is of substantial width, the fold plies being secured byV a line of stitches-S.V

HavingV thus set forth the nature of the invention, what I' claim'herein is v l. A hem-folder comprising .a scroll having guidingk walls :adapted to form the outer and inner fold-edges of ahem, inthe margin of a bodyy material, a fold-face separating arbor projecting .into said scroll, and supportingmeans for said arbor` providing aguide directing the inturned edge of the hem into contact-with thefouter edge-fold thereof within .said scroll.

. 2. A hem-folder comprising a scroll having guiding wallsv adapted to form the outer and'inner fold-edges of a hem, in the 'margin of-a body material, a Afold-face separating arbor freely suspended within said scroll, and arbor-supporting means connect- `edwith 1a longitudinaledge of said arbor Y in advance'ofthe worlrreceivingend and at the-outer fold-edgeside of said scroll. 3. 'A hem-folder comprising ahem-guid- 'ing scroll having a-'-reverselybent fold-face directing plate adapted toV form the outer and inner .fold- T edges of la hem, afold-face `separating arbor,Y

defining guiding .wallsand a raw edge-guide for the hem comprising arbor-supporting means spirally encompassing the arbor in spaced relation thereto and connected with a longitudinal edge of said arbor at the outer fold-edge side of the work-receiving end of the scroll. v l

4. A hem-folder comprising a work-supporting apron terminating at one side in a vreversely bent plate constituting ahemfolding "scroll providing substantially flat V'fold-face directing walls connected by outer and inner fold-edge guiding wa'1ls,"a"substantially fiat fold-face separating arbor, and supporting .means for said arbor cornprising an arm encompassing the arbor in spaced relation thereto and connected-with a Y longitudinal edge of said arborgat the outer fold-edge side of the scroll. Y l

5. A hem-folder comprising a scroll having guiding walls adapted to form the outer and inner fold-faces and fold-edges of a hem, a substantially flat fold-face separating arbor projecting forwardly beyond the work-receiving end of the scroll and freely suspended in the space between the foldface guiding walls, and arbor-supporting means comprising an arm encompassing the arbor in spaced relation thereto and connected therewith adjacent the work-receiving end lof the scroll at a point substantially in alinement with the outer fold-edge side of the scroll.

6. A hem-folder having a scroll comprising spaced fold-face :directing walls converging toward thedelivery end .of the scroll and guiding walls for-the outer and 'inner' fold-edges of a hem-fold, aYfold-face separating arbor terminating short of the delivery end of said scroll, and av supportj ing arm encompassing and connected with the arbor at the outer fold-edge sideA ofthe scroll.

V7. A hem-folder having a hem-guiding scroll comprising substantially at'Vfold-face directing walls terminating in outer and in- 'ner fold-edge guiding walls,`a substantialand a raw-edge guide for the hemcomprising arbor-supporting means spirally encom-E passing said arbor and connected withl a longitudinal edge thereof-at the outer foldedgegluiding side of the scroll.

S. A hem-folder comprising a scroll having guiding walls adapted to form the outer and inner fold-faces vand fold-edges of f a hem, the work-receiving edgey of said scroll progressing spirally towardA the delivery end ofthe scroll, a lfold-face separatingV arbor projecting` forwardly.,l beyond the-C5130 Work-receiving end of the scroll, and arborsupporting means comprising an arm pro-` jecting forwardly from said Work-receiving edge of the scroll and s pirally encompassing the arbor. l In testimony whereof, I havel signed my f name to this specification.

RUDOLPH J. SAILER. 

